Wavetrac vs 1-way vs 1.5 way front diff experiences?
#46
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...plated seems to need more maintenance, but it more effective in tucking the front end in on throttle lift.
Dallas do you think 80% would produce unwanted effects?
Does anyone know the correct part number for the Cusco front LSD for a IX, and MFactory for that matter??
Dallas do you think 80% would produce unwanted effects?
Does anyone know the correct part number for the Cusco front LSD for a IX, and MFactory for that matter??
#47
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I never got the proper tool to test break away torque but kinda wishing I had one so I could have checked new and now 2 seasons old later. Its doubtful I'll take it out this winter with the CNC projects I have planned anyways.
I flipped the plates on mine for 60% engagement because I still wanted good lockup on throttle but really wanted to reduce the preload torque. Talking with Greg McCance about front diff before I did it he was a pretty big influence on dropping preload and saying thats when the front diff really became magical to him. Though he has the Cusco and can remove 4 of the 8 springs IIRC, all you can do with the Mfactory is restack the plates.
I flipped the plates on mine for 60% engagement because I still wanted good lockup on throttle but really wanted to reduce the preload torque. Talking with Greg McCance about front diff before I did it he was a pretty big influence on dropping preload and saying thats when the front diff really became magical to him. Though he has the Cusco and can remove 4 of the 8 springs IIRC, all you can do with the Mfactory is restack the plates.
#48
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It's hard to imagine that the improvements mentioned by Dallas and giecev on the autox course wouldn't provide benefit for other types of performance driving. Main issues with plate at the front would seem to be a need to rebuild occasionally and sharing oil with gearbox.
#49
Rebuild interval for the Cusco is probably 20,000-30,000 miles on the street, and for how much I drive my Evo, that's 4-6 years, so I can live with that. And when I asked Jon@TRE about sharing oil, he had no concerns and thought it would be fine. So, I'm going for a 1/1.5 way, probably the Cusco.
#50
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Rebuild interval for the Cusco is probably 20,000-30,000 miles on the street, and for how much I drive my Evo, that's 4-6 years, so I can live with that. And when I asked Jon@TRE about sharing oil, he had no concerns and thought it would be fine. So, I'm going for a 1/1.5 way, probably the Cusco.
#52
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Pretty good info sheet on LSD's from Cusco here --> http://www.cuscousainc.com/downloads..._lsd_guide.pdf
#53
Okay, I see what I did. LSD 49 C15 is the JDM Evo 7 with the 1.5/1 way. JDM Evo 8 1 Way is the 50 C.
Pretty good info sheet on LSD's from Cusco here --> http://www.cuscousainc.com/downloads..._lsd_guide.pdf
Pretty good info sheet on LSD's from Cusco here --> http://www.cuscousainc.com/downloads..._lsd_guide.pdf
Also, there are some interesting pricing variations for the RS diff. Most of the USA sellers are around $2K, but most of the Japan-based sellers are closer to $1.3K. Its a big difference even when paying for the extra shipping cost. I keep thinking that maybe something it not included in the ones being sold out of Japan.
#57
I just realized that I miswrote here. Cusco discouraged the MZ because its cone springs loose tension more quickly. RS and Hybrid are fine for the street. Hybrid looks most attractive to me because initial torque can be set lower than RS, and it has a more progressive lockup. But probably can't get it from Japan at the good price because it appears to be a custom item.
#58
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Reading that cusco link, looks like cusco recommends a 1-way in almost every form of racing for the front diff of an AWD. So glad I spent $1k on a wavetrac...
Last edited by letsgetthisdone; Oct 18, 2017 at 08:05 AM.
#59
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More information on the Cusco LSD 450 front diffs: When speaking with Cusco, I asked about the C and the F model differences. The F has a 35 degree ramp on accel, and 0 degree on decel. The C has 45 degree accel/15 degree decel.
Not to derail, but of course after all this research it turns out that it's my TRE rear diff is the one that has crapped out, waiting for Jon to get back to me now. FML
Not to derail, but of course after all this research it turns out that it's my TRE rear diff is the one that has crapped out, waiting for Jon to get back to me now. FML
#60
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How many miles are on that oil?